Sharp EL-9900 - Manual (Page 134)

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Chapter 8: Matrix Features
3. Normal Matrix Operations
Many calculations can be made between a matrix and a real number or between
matrices.
Examples of each calculation are as follows:
To add or subtract matrices, the dimensions must be the same.
Example
1. Press # C.
2. Press @ m A
1 + @ m
A 2
3. Press E.
To multiply two matrices, the column dimension of the first matrix
must match the row dimension of the second matrix.
Example
1. Press # C.
2. Press @ m A
1 | @ m
A 2
3. Press E.
To obtain the square of a matirx:
Example
1. Press # C.
2. Press @ m A
1 y
3. Press E.
Matrix + Matrix
Matrix – Matrix
Matrix
×
Matrix
Square of
Matrix